Which of the following statement is correct about the program given below?

  #include
   class FresherGate
   {     
        int x, y;     
        public:   
        FresherGate(int xx = 0, int yy = 0)  
        {       
            x = xx;    
            y = yy;   
        } 
        void Display() 
        {       
            cout" " operator +(IndiaBix z)   
        {       
            FresherGate objTemp;      
            objTemp.x = x + z.x;     
            objTemp.y = y + z.y;      
            return objTemp;    
        } 
   }; 
   int main() 
   {   
       FresherGate objGate1(90, 80);  
       FresherGate objGate2(10, 20);   
       FresherGate objSum;      
       FresherGate &objRef = objSum;    
       objRef = objGate1 + objGate2;    
       objRef.Display();      
       return 0;  
  }